Told Fortune magazine's Nina Easton that he trash-talked President Bush about his mountain biking, trying to goad him into stepping it up to a triathlon and telling Bush he could wear water wings for the swimming segment if he needed them

His little brother is Ari Emanuel, the Hollywood superagent on whom Ari Gold's (Jeremy Piven) character on Entourage is based.

If that's his little brother, check out what big brother is going to do...